Casual · Skill
Reaction Test
How fast are your reflexes? Test reaction time across three increasingly tricky modes.
The game's own interface may still be in English.
Overview
Reaction Test offers three ways to compare your responses on the same device. Simple measures how quickly you respond to green. Discrimination asks you to ignore red as well. Sequence times how quickly you find and select five numbers in order. The game stores a personal best for each mode in the browser. For Simple, that record is the fastest valid press. For Discrimination, it is the average of the green responses with red penalties added. For Sequence, it is the fastest complete round. The results screen also shows best, average and worst times for the current session. Clearing site data clears your stored records. The fixed reference times shown for Simple and Discrimination are part of the game.
How to Play
Choose a mode and press Start. Click with a mouse or tap the target on a touchscreen.
- Simple. Wait until the panel turns green, then press it. You get five attempts. An early press counts as an invalid trial, and the average uses valid attempts.
- Discrimination. Press green and let red pass. The schedule mixes five green prompts with up to three red distractors. Each red press adds 500 ms to the comparison used for your personal best.
- Sequence. Press circles 1 through 5 in order. The timer starts when they appear. A press out of order leaves the current target active. Complete three rounds to see best, average and worst round times.
Tips & Strategy
In Simple, wait for green on every attempt so your average includes all five results. In Discrimination, keep your pointer over the panel and read the signal before clicking. In Sequence, look for the highlighted next number while moving toward it. Compare runs with the same mode, screen and input method because device latency affects the timing. On a phone, rest the device on a steady surface so the grip stays consistent between attempts. If an early press invalidates a Simple trial, use the valid-trial count beside the average when comparing sessions. In Sequence, finish all three rounds before comparing the fastest round with your saved record.
Controls
- Mouse
- Click the target
- Touch
- Tap the target
Features
- Five Simple trials
- Green targets and red distractors in Discrimination
- Three five-target rounds in Sequence
- Personal bests saved in this browser
Frequently asked questions
What does Reaction Test measure?
Simple and Discrimination measure the time from a green signal to your response. Sequence times a complete run through five numbered targets.
What happens if I press early?
In Simple, an early click makes that trial invalid. In Discrimination, clicking a visible red signal adds a 500 ms penalty.
How many rounds are there?
Simple has five trials. Discrimination mixes five green targets with red distractors. Sequence has three rounds of five targets.